大智慧C语言接口（来自网络资料）

// FxjFunc.cpp : Defines the entry point for the DLL application. // #include "stdafx.h" #include "FxjFunc.h" BOOL APIENTRY DllMain( HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { switch (ul_reason_for_call) { case DLL_PROCESS_ATTACH: case DLL_THREAD_ATTACH: case DLL_THREAD_DETACH: case DLL_PROCESS_DETACH: break; } return TRUE; } //计算收盘价的均价,一个常数参数,表示计算周期 //调用方法: // MYMACLOSE(5) __declspec(dllexport) int WINAPI MYMACLOSE(CALCINFO* pData) { float f,fTotal; int nPeriod,i,j; if(pData->m_pfParam1 && //参数1有效 pData->m_nParam1Start<0 && //参数1为常数 pData->m_pfParam2==NULL) //仅有一个参数 { f = *pData->m_pfParam1; nPeriod = (int)f; //参数1 if(nPeriod>0) { for(i=nPeriod-1;i<pData->m_nNumData;i++) //计算nPeriod周期的均线,数据从nPeriod-1开始有效 { fTotal = 0.0f; for(j=0;j<nPeriod;j++) //累加 fTotal += pData->m_pData[i-j].m_fClose; pData->m_pResultBuf[i] = fTotal/nPeriod; //平均 } return nPeriod-1; } } return -1; } __declspec(dllexport) int WINAPI MYMACLOSE_CALC_PREV(CALCINFO* pData) { if(pData->m_pfParam1 && pData->m_nParam1Start<0) { float f = *pData->m_pfParam1; return ((int)f) - 1; } return 0; } //计算均价,2个参数,参数1为待求均线的数据,参数2表示计算周期 //调用方法: // MYMAVAR(CLOSE-OPEN,5) __declspec(dllexport) int WINAPI MYMAVAR(CALCINFO* pData) { float f,fTotal; const float* pValue; int nPeriod,nFirst,i,j; if(pData->m_pfParam1 && pData->m_pfParam2 && //参数1,2有效 pData->m_nParam1Start>=0 && //参数1为序列数 pData->m_pfParam3==NULL) //有2个参数 { pValue = pData->m_pfParam1; //参数1 nFirst = pData->m_nParam1Start; //有效值 f = *pData->m_pfParam2; nPeriod = (int)f; //参数2 if(nFirst>=0 && nPeriod>0) { for(i=nFirst+nPeriod-1;i<pData->m_nNumData;i++) { fTotal = 0.0f; for(j=0;j<nPeriod;j++) //累加 fTotal += pData->m_pData[i-j].m_fClose; pData->m_pResultBuf[i] = fTotal/nPeriod; //平均 } return nFirst+nPeriod-1; } } return -1; } __declspec(dllexport) int WINAPI MYMAVAR_CALC_PREV(CALCINFO* pData) { if(pData->m_pfParam2) { float f = *pData->m_pfParam2; return ((int)f) - 1; } return 0; }